Grate



(No Model.) 2 Sheets-Sheet 1.

H. W. MERRITT.

GRATE.

No. 353,875. Patented Deo. 7, 1886.

' IIL llIL-z QL Ff-g.- '1- (No Model.) 2 Sheets-Sheet 2.

H. W. MERRITT.

GRATE.

No. 853,875. Patented Dec. 7, 1886.

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UNITED STATES PATENT OEETCEO HENRY WV. MERRITT, OF SOMERVILLE, ASSIGNOR TO WILLlAM H. IRELAND,

' OF BOSTON, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 353.875, dated December 7, 1886.

Application tiled May 1, 1886. Serial No. 200,576. (No model.)

T all whom it may concern.-

Be it known that I, HENRr W. MERRITT, of Somerville, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Grates for Stoves,

Ranges, and Furnaces, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of my invention is to so arrange ro and construct a lire-grate for a stove, range,

or furnace that the burning'coals may bethoroughly shaken by turning a crank attached to a revolving rocker-shaft under the grate, and also that by simply adjusting the shaft, by sliding it longitudinally and turning it by the crank, the entire contents of the lire-box may be du mped into the ash-p it. I accomplish this object by the mechanism shown in the accompanying drawings, in which- Figure l is a plan showing my invention, a part of the grate-.bars being omitted to show the rocker-shaft and its parts more clearly. Fig. 2 is a plan of a part. Fig. 3. is a perspective view of that end of the rocker-shaft to which the handle is attached. Fig. 4 is a cross vertical section representing two of the gratebars, one being represented as elevated, while the other is in its normal position. Fig. 5 is a cross vertical section representing the 3o grate tipped-#that is, in the position at which the contents of the fire-box could be dumped. Fig. 6 isa cross vertical section taken on line y y of Fig. 1, looking to the right. The dotted lines represent the grate tipped. Fig. 7

is a longitudinal vertical Section through the center.

Heretofore gratos have been made in which each. alternate bar may be rapidly raised and lowered by means of a revolving shaft; also,

4o grates have been made which may be dumped by means of a shaft.

My improvement consists in accomplishing this result by means of a single shaft which by its revolutions will shake the alternate bars,

and by being moved longitudinally, and then partly revolved, cause the grate to be tipped for dumping. The grate has no longitudinal movement.

In my device, A represents the bed-plate of a stove or furnace. The bars B B and B B form the frame of Athe grate, this frame being hung on trunnions C C, which rest in recesses made in the bed-plate A. The bars 'E E are shaped substantially as shown in Figs. 4 and 5, each being provided with upper and lower hooks, e c, at each end, said hooks serving to embrace thelongitudinal bars B B of the grate frame, as shown in Fig. 5, so that, although each individual grate-bar is free to rise orfall in relation to the longitudinal bars B B of the frame, it cannot be detached by ordinary use.

D is a longitudinal bar passing centrally under the grate-bars, and is provided with a series of projections, d d d d', as shown in Figs. 1 and 2, these projections being arranged so as to come in contact with the under side of the grate-bars when the shaft D is revolved or rocked, they being so arranged in relation to the grate-bars that the said bars are raised or lowered in alternate series. This takes place when theshaft D is longitudinally in position, (shown in Fig. 1;) but when the shaft D is drawn out, as indicated in Fig. 2, a special cam projection, K, attached to the shalt D, will occupy a position immediately under one of the end pieces, B, of the grate-frame, (see Fig. 8,) so that by now turning the shaft D the grate will be tipped to its dumping position, as shown in Fig. 5.

The handle H is attached to the shaft D by what .is known as the bayonet-joint, L and L, Fig. 3, being lugs, which assist in forming the joints.

N and N, Fig. 3, are lugs formed on the shaft D, which serve to limit its longitudinal motion in the frame A. Asthese lugs N N are below the right-hand bar B they do not` come in contact with it.

l? and P, Figs. l and 2, are lugs cast on the part B of the grate-frame to prevent the grate at the crank end from getting too near the part B, and thus interfering with the movement of the cam K in its revolution while the shaft D is being turned or rocked for shaking the grate. A3 is a lug cast on the plate A, and serves to stop the grate from tipping backward.

A', Figs. 4 and 5,is a bracket attached to the plate A, and serves to sustain the rod D. The'- bracket A has a notch, A2, Figs. 3 and 4, cast In a regrate, the combination of' the hedin it, to admit of the passage of the lugs N L plate A, frame B BB B', and bars E E, each on the rod D when the rod is inserted or rebar having hooks e e', with the shaft D, said p moved. shaft having projections d d d d', anda dump` 5 I am aware ofthe patents granted to Card, ing-cam K, all operating together, substan- I5 March 24,1885,No. 314,220, and Card,0ctober tially as deseribed,and for the purpose set forth.`

14, 1870, No.'220,464. for grates, and I donot HENRY W. MERRITT. claim any of the subject-matter therein dis- Vitnesses: closed. FRANK. G. PARKER,

1o I claim- WILLIAM EDsoN. 

